mirror of https://github.com/A2osX/A2osX.git
189 lines
3.1 KiB
Plaintext
189 lines
3.1 KiB
Plaintext
NEW
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AUTO 3,1
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*--------------------------------------
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STK.PopCtx jsr STK.Pull
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STK.PopCtxA and #$3F
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cmp #C.IF
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beq .8 IF : Nothing
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ldx #2
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cmp #C.WHILE WHILE : One Ptr = 2 bytes
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beq STK.PopX
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cmp #C.SWITCH SWITCH : hValue
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beq .2
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ldx #1
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cmp #C.CASE CASE : C.CASE + hValue
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beq .1
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cmp #C.FOR
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beq .3
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cmp #C.DEFAULT DEFAULT : C.DEFAULT + hValue
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bne .9
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.1 jsr STK.PopX
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.2 jsr STK.PullFree
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.8 clc
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rts
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.3 jsr STK.Pull Get FOR sub cmd
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beq .4 FOR List
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jsr STK.PullFree hVARNAME
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jsr STK.PullFClose hFILE/hPIPE
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ldx #2 CmdPtr
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jmp STK.PopX
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.4 jsr STK.PullFree hVARNAME
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jsr STK.PullFClose hFILE/hPIPE
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ldx #4 ListPtr,CmdPtr
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jmp STK.PopX
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.9 lda #E.STACKERROR
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sec
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rts
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*--------------------------------------
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STK.PopX lda (pData)
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.1 dec
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dex
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bne .1
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sta (pData)
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clc
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rts
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*--------------------------------------
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STK.Check sec
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adc (pData) StackPtr
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cmp #CORE.STACK.MAX
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bcc .8
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lda #E.STKOVERFLOW
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* sec
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.8 rts
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*--------------------------------------
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STK.PushYAX phx
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jsr STK.PushYA
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bcc STK.Push.1
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plx
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rts
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*--------------------------------------
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STK.PushInputBufPtr
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>LDYA ZPInputBufPtr
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*--------------------------------------
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STK.PushYA phy
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jsr STK.Push
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bcc STK.Push.1
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plx
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rts
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*--------------------------------------
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CORE.PushVarName
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>LDYA ZPVarNamePtr
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>SYSCALL StrDup
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bcs STK.Push.RTS
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txa
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*--------------------------------------
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STK.Push pha
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STK.Push.1 lda (pData) StackPtr
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inc
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cmp #CORE.STACK.MAX
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bcs .9
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sta (pData) StackPtr
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tay
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pla
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sta (pData),y
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* clc
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rts
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.9 pla
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lda #E.STKOVERFLOW
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* sec
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STK.Push.RTS
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rts
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*--------------------------------------
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STK.GetCtx jsr STK.Get
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tax
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bcs .1 no context...
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cmp #$C0+C.. in a call...
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beq .1 CS
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cmp #$C0+C.CALL
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beq .1 CS
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cmp #$C0+C.CLEXEC
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beq .1 CS
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and #$80 get current..
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lsr becomes parent
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bra .8
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.1 lda #$40 ...set Parent = true
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.8 sta CORE.TestResult
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txa
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rts
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*--------------------------------------
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STK.PullInputBufPtr
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jsr STK.Pull
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bcs .9
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sta ZPInputBufPtr
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jsr STK.Pull
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bcs .9
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sta ZPInputBufPtr+1
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.9 rts
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*--------------------------------------
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STK.PullFClose jsr STK.Pull
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>SYSCALL FClose
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rts
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*--------------------------------------
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STK.PullFree jsr STK.Pull
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>SYSCALL FreeMem
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rts
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*--------------------------------------
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STK.Pull jsr STK.Get
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bcs .9
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dey
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pha
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tya
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sta (pData) StackPtr
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pla
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.9 rts
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*--------------------------------------
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STK.Get lda (pData) StackPtr
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beq .9
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tay
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lda (pData),y
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clc
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rts
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.9 lda #E.STACKERROR
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sec
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rts
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*--------------------------------------
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MAN
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SAVE usr/src/bin/sh.s.stk
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LOAD usr/src/bin/sh.s
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ASM
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